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Sigma 100-400mm DG DN OS — Prime/zoom
Sigma

Sigma 100-400mm DG DN OS

Prime/zoom

86
/ 100
From $999
VS
Sigma 24-70mm f/2.8 DG DN II Art wins by 4
Sigma 24-70mm f/2.8 DG DN II Art — Mirrorless standard zoom · 745 g
Sigma

Sigma 24-70mm f/2.8 DG DN II Art

Mirrorless standard zoom · 745 g

90
/ 100
From $1,199
Specdex verdict

Sigma 24-70mm f/2.8 DG DN II Art takes it — here’s why.

In our weighted Specdex score, Sigma 100-400mm DG DN OS lands at 86 and Sigma 24-70mm f/2.8 DG DN II Art at 90. That puts Sigma 24-70mm f/2.8 DG DN II Art ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Sigma 100-400mm DG DN OS if…

  • ✓Proven optical formula
  • ✓Weather-sealing (L/GM/S)
  • ✓Strong resale

Pick Sigma 24-70mm f/2.8 DG DN II Art if…

  • ✓Great optics for half the price of GM
  • ✓Dual HLA motors
  • ✓Solid sealing
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Build

Tie

Compared on the build sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Sharpness

Sigma 24-70mm f/2.8 DG DN II Art

Compared on the sharpness sub-score

Sigma 24-70mm f/2.8 DG DN II Art leads on sharpness (92 vs 86).

Autofocus

Sigma 24-70mm f/2.8 DG DN II Art

Compared on the autofocus sub-score

Sigma 24-70mm f/2.8 DG DN II Art leads on af (90 vs 82).

Value for money

Sigma 100-400mm DG DN OS

Specdex score per dollar at MSRP

Sigma 100-400mm DG DN OS more score per dollar ($999 vs $1,199).

Sigma 100-400mm DG DN OS 86
vs
90 Sigma 24-70mm f/2.8 DG DN II Art

Score breakdown

Sigma 100-400mm DG DN OS
86
sharpness 86
af 82
build 90
value 86
Sigma 24-70mm f/2.8 DG DN II Art
90
sharpness 92
af 90
build 90
value 96

Specs side-by-side

Sigma 100-400mm DG DN OS versus Sigma 24-70mm f/2.8 DG DN II Art — full spec comparison
Spec Sigma 100-400mm DG DN OS Sigma 24-70mm f/2.8 DG DN II Art
Mount
—
Sony E, L-Mount
Aperture
—
f/2.8
Weight
—
745 g

Sigma 100-400mm DG DN OS

Pros
  • +Proven optical formula
  • +Weather-sealing (L/GM/S)
  • +Strong resale
Cons
  • −Mount-specific
  • −Older AF motor on some
  • −Heavier than modern counterparts

Sigma 24-70mm f/2.8 DG DN II Art

Pros
  • +Great optics for half the price of GM
  • +Dual HLA motors
  • +Solid sealing
Cons
  • −Slightly slower AF than GM II
  • −Heavier than GM II
  • −Focus breathing present

FAQ: Sigma 100-400mm DG DN OS vs Sigma 24-70mm f/2.8 DG DN II Art

Which is better, Sigma 100-400mm DG DN OS or Sigma 24-70mm f/2.8 DG DN II Art? +

Sigma 24-70mm f/2.8 DG DN II Art scores 90 on our weighted rubric — ahead by 4. Your best pick depends on the sub-scores above.

Is Sigma 100-400mm DG DN OS worth the price? +

At $999, Sigma 100-400mm DG DN OS delivers a Specdex score of 86 — strongest in build.

Is Sigma 24-70mm f/2.8 DG DN II Art worth the price? +

At $1,199, Sigma 24-70mm f/2.8 DG DN II Art delivers a Specdex score of 90 — strongest in value.

Does Sigma 100-400mm DG DN OS or Sigma 24-70mm f/2.8 DG DN II Art last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for sharpness, Sigma 100-400mm DG DN OS or Sigma 24-70mm f/2.8 DG DN II Art? +

Sigma 24-70mm f/2.8 DG DN II Art — leads on sharpness (92 vs 86). Compared on the sharpness sub-score.

Which is better for autofocus, Sigma 100-400mm DG DN OS or Sigma 24-70mm f/2.8 DG DN II Art? +

Sigma 24-70mm f/2.8 DG DN II Art — leads on af (90 vs 82). Compared on the autofocus sub-score.